This video offers a useful method for making a realistic stone texture on your models.
Ryan Scow has a tutorial on making miniature wargames trees from sage brush. They are very good looking.
Ryan Scow has a tutorial on how to make balsa strips look like timbers for use in models of half timbered houses, stairs and other miniature wargames terrain projects.
I’ve been on a Kill Team kick lately. It gives me the flavor of the full Warhammer 40K game at a fraction of the expense and time. I have thus been searching for some
GHQ, maker of those fabulous microscale armor and ships has a tutorial on making ocean hex tiles. The techniques also could be applied to other terain forms, such as those large styrofoam squares so many seem to use.